Norval direct operated medium-low pressure gas regulator, flanged, fail open, by Pietro Fiorentini H2 Ready
Direct Operated Regulator

Norval Medium-Low Pressure Gas Regulator

A direct-operated gas pressure regulator designed for filtered gaseous fluids in medium and low pressure natural gas distribution networks. Classified as Fail Open per EN 334. Hydrogen Ready for NG-H2 blending applications (20% hydrogen blending compatible, higher blending available on request). Multiple configurations including monitor, upside-down, silencer, and slam-shut options.

Supplied and supported across Saudi Arabia, the GCC and the Middle East from Al Khobar

H2 Ready
Up to 18.9 bar
1″ - 8″

Technical Specifications

Performance
Inlet Pressure (up to 3″)0.1 to 18.9 bar
Inlet Pressure (4″, 6″, 8″)0.1 to 8.6 bar
Downstream Pressure (up to 4″)0.008 to 4.4 bar
Downstream Pressure (6″, 8″)0.012 to 1.8 bar
Accuracy Class (AC)Up to 5 | Up to 1% absolute
Lock-up Pressure Class (SG)Up to 10
Construction
Design PressureUp to 18.9 bar
Operating Temperature-20°C to +60°C
Nominal Sizes1″, 1½″, 2″, 2½″, 3″, 4″, 6″, 8″
ConnectionsClass 150 RF per ASME B16.5; PN 16 per ISO 7005
Fail ModeFail Open (EN 334)

Applications

Gas Distribution MP
Gas Distribution LP
District Stations
Medium/Small Industry
Gas Engines
Regasification
NG-H2 Blending
Commercial Users

Key Features

Hydrogen Ready

20% hydrogen blending compatible; higher blending available on request.

Wide Size Range

Available from 1″ to 8″ for diverse application requirements.

Multiple Configurations

Monitor, upside-down, silencer, and slam-shut options available.

High Accuracy

Up to 1% absolute accuracy for precise pressure regulation.

Frequently asked questions

What pressure range does the Norval cover?

The Norval is a direct operated regulator from 1 to 8 inches. Up to 3 inch it takes inlet from 0.1 to 18.9 bar; the 4, 6 and 8 inch sizes take 0.1 to 8.6 bar. Outlet is 8 mbar to 4.4 bar up to 4 inch and 12 mbar to 1.8 bar for 6 and 8 inch. Accuracy reaches 1% absolute, and it is Fail Open under EN 334.

Which configurations are available for the Norval?

The flyer lists an SN slam shut, a silencer and an ER monitor attachment, and the modular design allows the slam shut to be retrofitted. The page also lists an upside-down configuration. The standard Norval is compatible with 20% hydrogen blending.

Can you supply the Norval in Saudi Arabia and the GCC?

Pietro Fiorentini Saudi Industry in Al Khobar supplies and supports the Norval for district stations, gas engines and industrial users in Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Share your line size, pressures and flow with us for a quotation.

Need More Information?

Our technical team is ready to help you select the right regulator for your application.